The average human being

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The average human being

by vipulgoyal » Sun Mar 15, 2015 7:18 pm
The average human being can hear sounds of up to 20 kHz frequency; therefore, most of the sounds made by the tiny parts inside a computer - regardless of volume - are inaudible to the human ear, because their frequencies are often in the 100 kHz range - too high for the human ear to detect.

A.therefore, most of the sounds made by the tiny parts inside a computer - regardless of volume - are inaudible to the human ear, because their frequencies are often in the 100 kHz range - too high for the human ear to detect
B.therefore, because the frequency of the sounds made by the tiny parts inside a computer are often in the 100 kHz range, that makes them inaudible to the human ear
C.therefore, the frequencies of the tiny parts inside a computer-regardless of volume-often in the 100 kHz range, are inaudible to the human ear
D.most of the sounds made by the tiny parts inside a computer-regardless of volume-are therefore inaudible to a human being because of their frequencies being too high for the human ear to detect them
E.most of the sounds made by the tiny parts inside a computer-regardless of volume-are often in the 100 kHz range that is inaudible to the human ear

Is their is correctly used in OA

A

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by GMATGuruNY » Mon Mar 16, 2015 3:53 am
OA: THEREFORE, most of the sounds...are inaudible...BECAUSE their frequencies are often in the 100 kHz range.
Here, the usage of therefore and because within a single sentence is troublesome, since both words imply CAUSALITY.
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by ratanvk » Tue Jun 30, 2015 9:41 pm
GMATGuruNY wrote:OA: THEREFORE, most of the sounds...are inaudible...BECAUSE their frequencies are often in the 100 kHz range.
Here, the usage of therefore and because within a single sentence is troublesome, since both words imply CAUSALITY.
What is the source of this SC?
Is in't D the correct option?